Earthquake · reviewed by a seismologist
M 1.8ml
9 km ESE of Scotts Mills, OR
Yes. A magnitude 1.8 earthquake was recorded 9 km ESE of Scotts Mills, OR, 60 km (37 mi) S of Portland, OR, at 11:58 pm PDT on 27 June 2020 (06:58 UTC), 7.5 km deep.
60 km (37 mi) S of Portland, OR · 37 km (23 mi) ENE of Salem, OR
- When
- Magnitude
- M 1.8 (ml)
- Depth
- 7.5 km below the surface
- Felt
- no reports yet
- Nearest
- Marion County, 11 km S
- Nearest mapped fault
- Mount Angel fault, 8 km from its surface trace — near is not the same as on
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2328 days ago
Earthquake alerts for Molalla, OR
Get a notification in this browser when USGS records an earthquake near Molalla, OR. No account or email needed.
Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
At this magnitude and depth, people at rest would likely notice it out to about 11 km (7 mi) from the epicentre. Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.
Earthquakes near other towns within 30 km: Molalla, Silverton, Mount Angel, Mulino, Lyons, Sublimity.
How big was it?
This earthquake released about 14 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,100,000× the energy of this one
- Magna, Utah 2020 M 5.7 760,000× the energy of this one
- Around the size people start to feel M 3.0 68× the energy of this one
- This earthquake M 1.8 about 14 lb of TNT
Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.
Where
Epicentre 44.9983, -122.5700. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Marion County, OR | 11 km (7 mi) | S | earthquakes near Marion County |
| Clackamas County, OR | 35 km (21 mi) | ENE | earthquakes near Clackamas County |
| Linn County, OR | 57 km (35 mi) | S | earthquakes near Linn County |
| Multnomah County, OR | 62 km (39 mi) | N | earthquakes near Multnomah County |
| Yamhill County, OR | 65 km (40 mi) | WNW | earthquakes near Yamhill County |
| Polk County, OR | 66 km (41 mi) | W | earthquakes near Polk County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
52 earthquakes have been recorded within 50 km since this one.
- 1.6 3 km ESE of Sherwood, Oregon
- 2.0 2 km WNW of Molalla, Oregon
- 1.7 4 km ESE of Silverton, Oregon
- 1.9 3 km NNE of Hubbard, Oregon
- 1.7 5 km SSW of Saint Paul, Oregon
- 1.5 7 km ESE of Estacada, Oregon
- 1.7 8 km E of Molalla, Oregon
- 1.6 5 km E of Hubbard, Oregon
- 1.5 6 km SE of Molalla, Oregon
- 1.8 3 km W of Saint Paul, Oregon
- 1.6 14 km ESE of Scotts Mills, Oregon
- 1.6 1 km SSE of King City, Oregon
- 1.6 8 km ESE of Molalla, Oregon
- 1.7 4 km WNW of Molalla, Oregon
- 2.7 4 km WNW of Molalla, Oregon
Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.
On USGS
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.